The catch
Casio PX-S3100
No microphone input is provided. A suitable line-level player works with Audio In, while a bare microphone needs a different route.
Side by side
Casio PX-S3100 vs PX-S6000 for a backing band or a singing setup: 6000 adds a microphone, but 3100 accompaniment is not replaced by its drum patterns
Quick verdict
PX-S3100 is the choice for chord-following accompaniment, a wired music-player input and a lighter movable setup. PX-S6000 is the choice for hybrid keys, a microphone input and direct sound controls. Its drum-pattern metronome is no substitute for PX-S3100’s accompaniment styles. WAV files can be recorded to a flash drive on both, but the drive shares the Bluetooth-adapter port and neither provides live computer USB audio.
Before you buy
Why, and what it costs you
Stepping up may cost you the band you wanted to keep
A person learning alone may count on the piano for chords, bass and rhythm while they play a melody. The accompaniment styles on the PX-S3100 serve that routine. The PX-S6000 shifts the emphasis toward hybrid keys, microphone effects and hands-on tone control, and its drum-pattern metronome and arpeggiator don’t recreate the same chord-following band. If accompaniment is what keeps practice fun, decide around that first. A higher model number doesn’t fully replace the way a lower model makes music.
Where this comes from
The full PX-S3100 accompaniment specification set against the PX-S6000 function list. The latter’s drum patterns and arpeggiator are different functions. No promise is made about motivation or learning outcomes.
The catch
Casio PX-S6000
It weighs 3.4 kg more and lacks the PX-S3100 accompaniment-style workflow. A drum metronome is no substitute for a backing band.
Casio PX-S3100
- Why pick it
- You want the piano to play accompaniment around your chords, or you need its stereo Audio In for a wired music source you already have.
- The room gets cleared after practice, and you favor a body of 11.4 kg before batteries and accessories.
- The catch
- No microphone input is provided. A suitable line-level player works with Audio In, while a bare microphone needs a different route.
Casio PX-S6000
- Why pick it
- You want to sing into a dynamic microphone, and after trying it you prefer the documented hybrid wood-and-resin key design.
- Assignable controls and mic effects matter more to you than a chord-following backing band.
- The catch
- It weighs 3.4 kg more and lacks the PX-S3100 accompaniment-style workflow. A drum metronome is no substitute for a backing band.
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What this page compares
Not every PX-S3100 feature carries over to the higher model. Compare accompaniment, microphone and line inputs, carrying weight and shared-room practice.
These Casio pianos are both slim, battery-capable and 88-key, with two headphone sockets. Going up the range shifts the creative emphasis and also the action design.
Which one fits
Pick the situations that sound like you
You want chords and bass that change behind your melody
Accompaniment styles are on the PX-S3100. The drum patterns on the PX-S6000 do not provide the same band function.
- Casio PX-S3100
- Better fit
- Casio PX-S6000
- Caution
You plan to sing into a dynamic microphone
The mic input and effects are on the PX-S6000. The PX-S3100’s Audio In takes a suitable line-level source instead.
- Casio PX-S3100
- Caution
- Casio PX-S6000
- Better fit
A wired player you already have has to stay connected while you record to flash
The PX-S3100 has its own stereo Audio In. Don’t assume the mic input on the PX-S6000 accepts the same stereo source.
- Casio PX-S3100
- Better fit
- Casio PX-S6000
- Caution
The piano has to be carried away after every lesson
Despite the similar slim outline, the PX-S6000 is 3.4 kg heavier before accessories.
- Casio PX-S3100
- Better fit
- Casio PX-S6000
- Caution
In practice
Differences you will notice
Stepping up may cost you the band you wanted to keep
A person learning alone may count on the piano for chords, bass and rhythm while they play a melody. The accompaniment styles on the PX-S3100 serve that routine. The PX-S6000 shifts the emphasis toward hybrid keys, microphone effects and hands-on tone control, and its drum-pattern metronome and arpeggiator don’t recreate the same chord-following band. If accompaniment is what keeps practice fun, decide around that first. A higher model number doesn’t fully replace the way a lower model makes music.
How we worked this out
The full PX-S3100 accompaniment specification set against the PX-S6000 function list. The latter’s drum patterns and arpeggiator are different functions. No promise is made about motivation or learning outcomes.
The input you give up can matter more than the one you get
A family might feed wired backing music into the PX-S3100 from an older player or through a phone adapter. Its separate Audio In also sidesteps the Bluetooth-adapter conflict when the USB-A port is holding a recording drive. The PX-S6000 gains a mic input, but nothing in its full connector list is a separate stereo line input, so don’t treat that mic socket as a stand-in for a stereo-player connection. For singing into a dynamic mic, the PX-S6000 is the direct fit. For playing along with an existing wired source, verify an alternative route before you upgrade.
How we worked this out
The exact connector lists keep stereo Audio In and dynamic mic input apart. On both models, the USB-A port is shared by the adapter and a flash drive. No adapter or input-level compatibility that isn’t documented is assumed.
Even a ten-millimeter change in size can affect who is able to put it away
The PX-S6000 is just 10 mm deeper, yet its bare body is 3.4 kg heavier, about 7.5 lb. When a child practices in a room that an adult has to clear afterward, the weight lands on whoever sets up and packs away, who may not be the player. The PX-S3100 keeps accompaniment and batteries in the lighter body. Pick the PX-S6000 if its mic and key design justify the extra handling, and judge the complete lift with a suitable case. Neither body depth counts the stand or the seated playing space.
How we worked this out
Depth: 242 minus 232 = 10 mm. Weight: 14.8 minus 11.4 = 3.4 kg, approximately 7.5 lb. Neither weight includes accessories and batteries.
Option A
Casio, PX-S3100
PX-S3100
You want the piano to play accompaniment around your chords, or you need its stereo Audio In for a wired music source you already have.
- Best for
- You want the piano to play accompaniment around your chords, or you need its stereo Audio In for a wired music source you already have.
Facts we checked
- Play with a backing band: 200 accompaniment rhythms with chord-following parts
- Bring in another sound source: Stereo line-level Audio In, no microphone input
- Keyboard action: Smart Scaled Hammer
- Carry between sessions: 11.4 kg without batteries or accessories
Option B
Casio, PX-S6000BKC3
PX-S6000
You want to sing into a dynamic microphone, and after trying it you prefer the documented hybrid wood-and-resin key design.
- Best for
- You want to sing into a dynamic microphone, and after trying it you prefer the documented hybrid wood-and-resin key design.
Facts we checked
- Play with a backing band: Drum-pattern metronome and arpeggiator, no matching accompaniment-style engine
- Bring in another sound source: Dynamic mic input with effects, no separate stereo line input in the connector list
- Keyboard action: Smart Hybrid Hammer
- Carry between sessions: 14.8 kg without batteries or accessories
Spec by spec
Where they really differ
| Spec | Casio PX-S3100 | Casio PX-S6000 | In practice |
|---|---|---|---|
| Play with a backing band | 200 accompaniment rhythms with chord-following parts | Drum-pattern metronome and arpeggiator, no matching accompaniment-style engine | Chords and bass that change around a performance are not something a metronome pattern supplies. |
| Bring in another sound source | Stereo line-level Audio In, no microphone input | Dynamic mic input with effects, no separate stereo line input in the connector list | Let the source you really want to connect make the call. |
| Keyboard action | Smart Scaled Hammer | Smart Hybrid Hammer | The designs differ, but only trying them will show which touch you prefer. |
| Carry between sessions | 11.4 kg without batteries or accessories | 14.8 kg without batteries or accessories | The PX-S6000 makes every repeated lift 3.4 kg heavier. |
| Body depth | 232 mm | 242 mm | A mere 10 mm of extra depth doesn’t show how different the two are to handle. |
| Bluetooth and audio recording | WU-BT10 and flash drive share USB-A | WU-BT10 and flash drive share USB-A | Moving to the higher model doesn’t get rid of this port conflict. |
| Computer sound capture | USB-MIDI with analog line outputs | USB-MIDI with analog line outputs | Capturing the internal sound live takes a separate audio path on both. |
Trade-offs
What each pick costs you
With Casio PX-S3100
- The battery runtime estimate comes with conditions. The SP-34 and a suitable stand are not part of the base box.
With Casio PX-S6000
- The SP-3 in the box is still an on-off switch. MIDI over USB to a computer doesn’t capture the piano sound live.
Change of plan
When the answer changes
You can’t do without chord-following accompaniment
Go with Casio PX-S3100. The PX-S3100 supports that directly.
Using a microphone directly counts for more than the backing band
Go with Casio PX-S6000. For that singing setup, the PX-S6000 brings the input and the controls.
You’re hoping the upgrade ends the Bluetooth-versus-flash port sharing
Neither model fits. On both, one USB-A socket has to serve the Bluetooth adapter and the recording drive.
Decision guide
Before you buy
A more capable piano for making music at home is the aim, but the feature you use most may be the very one the higher model changes. A backing band and a microphone input solve different jobs.
What this page can’t tell you
- We make no matched comparison of speakers, touch or battery duration.
- When we say a feature is absent, that rests on complete function and connector lists for the exact model and not on a missing marketing mention.
By the numbers
What the data shows
What we found across the digital pianos we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Casio PX-S3100 |
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| |
| Casio PX-S6000 |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Casio PX-S3100
You want the piano to play accompaniment around your chords, or you need its stereo Audio In for a wired music source you already have.
The room gets cleared after practice, and you favor a body of 11.4 kg before batteries and accessories.
See price & reviews on AmazonCasio PX-S6000
You want to sing into a dynamic microphone, and after trying it you prefer the documented hybrid wood-and-resin key design.
Assignable controls and mic effects matter more to you than a chord-following backing band.
See price & reviews on AmazonEach link opens in a new tab.
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